Help, my daughter is learning about finding lengths of unknown sides. I have no idea how to help on these three homework problem
s that are due by tomorrow. 4th grade
1 answer:
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Compound percentage reduction can be calculated by multiplying the initial number by (1-x)^t where x is the percentage reduction (/100, i.e. 1% reduction is 0.01), and t is the number of times it has reduced.
So:
a)
Where t is the number of weeks.
We can then just substitute in to work out the final pressure:
b) p = 45*0.94^6 = 31psi
So:
a)
Where t is the number of weeks.
We can then just substitute in to work out the final pressure:
b) p = 45*0.94^6 = 31psi
<u>The total </u><u>labor cost</u><u> of the carpenters is $2296.91</u>
The carpenters worked
Let's convert the mixed fraction to improper fraction
So, we would have
- 63/4,
- 61/4,
- 35/2,
- 25/2
- 35/2.
Let's sum it up and multiply by the working cost per hour
- The total labor cost is = total hours worked * hourly rate.
This becomes
<u>The total labor cost is $2296.91</u>
Learn more about rate here;